*{
    margin: 0;
    padding: 0;
}
.content{
    cursor: pointer;
    position: relative;
    width: 600px;
    height: 400px;
    margin-left: auto;
    margin-right: auto;
    border: 1px solid #333;
    margin-top: 50px;
}
#list{
    position: absolute;
    width: 600px;
    height: 400px;
}
#list img{
    width: 600px;
    height: 400px;
}

#list img,#prev,#next,#btns{
    position: absolute;
}
#list img:not(:first-child){
    display: none;
}
#prev,#next{
    cursor: pointer;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    width: 40px;
    height: 70px;
    background: url("../images/icon-slides.png");
    border: none;
}
#prev{
    background-position-x: -86px;
}
#prev:hover{
    background-position: 0;
}
#next{
    right: 0;
    background-position-x: -125px;
}
#next:hover{
    background-position-x: -43px;
}
#btns{
    z-index: 101;
    transform: translateX(-50%);
    bottom: 20px;
    left:50%;
}
#btns .current{
    background:rgb(96, 108, 172);
} 
#btns>span{
    cursor: pointer;
    width:20px;
    height:20px;
    display: inline-block;
    border-radius: 50%;
    border:1px solid rgb(171, 198, 212);
    background-color:rgba(44,44,44,.3);
}